Surgical and medical apparatus and instruments, namely, a filtering system comprised of a sizing screen having a bushing that created an air-tight slip on connection with a sterile tube receptacle chamber having a female luer port that allows syringe-dispensed filtration and particle sizing through a transfer cannula into a receptacle chamber for the sizing and/or filtering and/or separation and/or sorting and/or concentrating of aspirated and harvested tissue and fluid biologic agents or their components including blood, plasma, platelet-rich plasma, platelet-poor plasma, bone marrow aspirate, bone marrow concentrate, fat aspirate, fat aspirate concentrate, micro-fragmented adipose tissue